1992 190E 2.6, 204K miles

Seems to run well around town and such.

When accelerating to enter the highway - about 5,000RPM some smoke appears to be gray billows out the tail pipe.

The acceleration continues, though the 190E was never a rocket.

My concern is air pollution - I feel bad spraying that much ugly smoke.

Could it be Fuel Injectors - they have never been replaced?

Could it be Valve Seals - They have never been replaced, and I seem to notice a puff of black smoke at start up - though not much.

Currently adding 1 quart of oil at 500 miles.

I have the equipment and plan to do a cylinder pressure test.

Your thoughts and suggestions please.

__________________
Thanks for the help
Bill Fisher

'86 560SL (186K) - Now a 'classic' : Registered as an Historic Vehicle
02 E430 in the stable
'14 LS460 (Lexus)
- - - - -
'95 E420 (198K) found a new home
'99 E320 (80K) (gave it's life for me as we hit a bumper)
'95 E420 (231K) Sold to a happy buyer, new to Mercedes
'90 300E (65K) Sold to an Mercedes Lover
'92 190E (215K) - retired to the salvage yard
'93 500SEL (214K) - Moved to another family, still runs like a young pup